install pb(solved) : http://gems.rubyforge.org/ does not appear to be a repository

I'm installing ruby on rails on my local windows laptop,
piece of cake, ruby is adult now, so I thought...

http://rubyonrails.org/download
is clear :
install ruby with windows installer, ok
download gems, unzip and "ruby setup.rb", ok
but "gem install rails" tells :
"http://gems.rubyforge.org/ does not appear to be a repository"
here I groan, is it the proxy ? no, is it a real message ?
(gems.rubyforge is not a repository!?). what are those kind of
incomplete installations.
in google many people are in the same sh..case.

the solution :

1) it is a connection problem to repository :

gem install rails --debug

Exception `NameError' at C:/guy/app/Ruby/lib/ruby/site_ruby/1.8/
rubygems/command_manager.rb:161 - uninitialized constant
Gem::Commands::InstallCommand
Exception `Gem::LoadError' at C:/guy/app/Ruby/lib/ruby/site_ruby/1.8/
rubygems.rb:826 - Could not find RubyGem sources (> 0.0.1)
Exception `Errno::ETIMEDOUT' at C:/guy/app/Ruby/lib/ruby/1.8/net/
http.rb:560 - Une tentative de connexion a ÚchouÚ car le parti
connectÚ n'a pas rÚpondu convenablement au-delÓ d'une certaine durÚe
ou une connexion Útablie a ÚchouÚ car l'h¶te de connexion n'a pas
rÚpondu. - connect(2)
Exception `Gem::RemoteFetcher::FetchError' at C:/guy/app/Ruby/lib/ruby/
site_ruby/1.8/rubygems/remote_fetcher.rb:172 - Errno::ETIMEDOUT: Une
tentative de connexion a ÚchouÚ car le parti connectÚ n'a pas rÚpondu
convenablement au-delÓ d'une certaine durÚe ou une connexion Útablie a
ÚchouÚ car l'h¶te de connexion n'a pasrÚpondu. - connect(2) (http://
gems.rubyforge.org/latest_specs.4.8.gz)
Exception `#<Class:0x2c94d14>' at C:/guy/app/Ruby/lib/ruby/1.8/
timeout.rb:60 - execution expired
Exception `Timeout::Error' at C:/guy/app/Ruby/lib/ruby/1.8/timeout.rb:
74 - execution expired
Exception `Gem::RemoteFetcher::FetchError' at C:/guy/app/Ruby/lib/ruby/
site_ruby/1.8/rubygems/remote_fetcher.rb:170 - timed out (http://
gems.rubyforge.org/specs.4.8.gz)
Exception `#<Class:0x2c9140c>' at C:/guy/app/Ruby/lib/ruby/1.8/
timeout.rb:60 - execution expired
Exception `Timeout::Error' at C:/guy/app/Ruby/lib/ruby/1.8/timeout.rb:
74 - execution expired
Exception `Gem::RemoteFetcher::FetchError' at C:/guy/app/Ruby/lib/ruby/
site_ruby/1.8/rubygems/remote_fetcher.rb:170 - timed out (http://
gems.rubyforge.org/yaml)
ERROR: http://gems.rubyforge.org/ does not appear to be a repository
Exception `Gem::RemoteFetcher::FetchError' at C:/guy/app/Ruby/lib/ruby/
site_ruby/1.8/rubygems/spec_fetcher.rb:155 - timed out (http://
gems.rubyforge.org/yaml)
Exception `Gem::GemNotFoundException' at C:/guy/app/Ruby/lib/ruby/
site_ruby/1.8/rubygems/dependency_installer.rb:200 - could not find
gem rails locally or in arepository
ERROR: could not find gem rails locally or in a repository

error message should be "Timeout" instead of "not a repository"

checking : yes unfortunately the site seems overloaded , unbrowseable
http://gems.rubyforge.org/gems

2) http://gems.rubyforge.org should be multimirrored
yes there are mirrors, but where there is only few gems, 25 on gem
list --source http://gems.rubyonrails.org

3) I managed installing gems manually.
but not like the other posts I will tell how (to just a "I
succeeded! thanks!")
gem install rails --source http://gems.rubyonrails.org
indicates that "rake" is not up to date, I found a mirror
http://de.mirror.rubyforge.org/gems/ and downloaded rake-0.8.7.gem,
and
gem install rake-0.8.7.gem
then
gem install rails --source http://gems.rubyonrails.org

4) so..... three hours lost, because of the installation system not
working.
-http://gems.rubyforge.org is supposed to lead to other mirrors ? this
is not working.
-in the basic installation there is no backup repositories
-there is no manual list of mirrors
=> guys, you have already built all the tools , you can do as reliable
as CPAN or CentOs